Novel degradable stopper implanted through guide pipe and conveying system of novel degradable stopper

Abstract

The invention provides a novel degradable stopper implanted through a guide pipe. The novel degradable stopper comprises a ball bag, a supporting rod and degrading liquid. The supporting rod is fixedly connected with the ball bag, the periphery of the supporting rod is wrapped by the ball bag, and the degrading liquid is a biological material which can be degraded and absorbed and is arranged in the ball bag in a filling mode to play a supporting effect. The invention further provides a conveying system of the novel degradable stopper implanted through the guide pipe. The conveying system comprises a long sheath, an inner core, a loader, a pushing rod and an infusion pipe. The stopper is made of degradable materials, foreign objects are not left in vivo, and a long-term effect is obvious. In addition, the stopper is of a ball bag type structure, and the inner filler of the stopper is temperature-sensitive hydrogel. When an abnormal defect is blocked, the stopper can be attached to the periphery of the defect completely, and especially a better blocking effect is achieved on irregular defects. The stopper can be suitable for blocking of the patent ductus arteriosus and can be made into a stopper suitable for atrial septal defects and a stopper suitable for ventricular septal defects through changing of the shape of the ball bag.

Description

technical field [0001] The invention relates to an occluder and a delivery system thereof, in particular to a novel degradable occluder implanted through a catheter and a delivery system thereof. Background technique [0002] Congenital heart disease (CHD) is one of the common cardiovascular diseases, with an incidence rate of 8‰-12‰. About 150,000 to 200,000 newborns born in my country suffer from various congenital heart diseases every year. Patent ductus arteriosus (PDA) is a clinically common congenital heart disease, accounting for 9%-12% of congenital heart disease. The traditional treatment method is surgery, but surgery is more harmful to the body, and there are certain surgical complications. symptoms and leave scars, affecting the physical and mental health of patients. Since the 1980s, my country has gradually introduced minimally invasive interventional technology for the treatment of congenital heart disease, because of its advantages of good safety, easy ope...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of degradable occluder implanted through catheter and its delivery system, which can solve various potential risk problems existing in traditional nickel-titanium alloy occluders

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